Trolley-harp.



E. J. MOGARTY. TROLLBY HARP. APPLICATION FILED 00T.9, 1011.

Patented Aug. 18, 1914.

unrrnn srnrns PATENT onnion.

EUGENE J. MCCARTY, OF CLI NTO N, MASSACHUSETTSp ASSIGNOR TO THOMAS J. MCNAMARA, OF CLINTON, MASSACHUSETTS.

TItOLLEY-HARP.

movers.

Specification 01 Letters Patent.

Application filed October 9, 1911. Serial No. 653,574.

To all whom it may concern:

Be it known that I, EUGENE J. MOCARTY,

harp and wheel in which the durability of the wheel and the bearings shall be very materially increased over the present constructions; to provide a construction in which the parts which are most worn by the 15 ordinary usage of the harp can be removed readily and rep-laced at very small cost; to provide separate supports for, the two bearings of the trolley wheel which can be dismounted and removed very readily; to pro- 20 vide an improved form of lubricating device for the bearing surfaces; and to provide a construction of this character in which most of the parts can be cast in one piece, thus reducing the expense ofmanu- 75 facture and maintenance.

Reference is to be had to the accompanying drawings in which Figure 1 is a front elevation of a trolley wheel and harp constructed in accordance o with this invention with parts broken away and shown in section, and Fig. 2 is an end view thereof.

The invention is shown as applied to an ordinary pole or rod on which is secured 5 by a pin 11 a tubular member 12 spaced from the pole at the top so as to form a socket between the pole and tubular member. Into this socket a pair of semi-cylindrical'members 13 are placed and held in position by a 0 pin 14 passing through the pole and tube and through semi-cylindrical notches 15 in the members 13. This pin has a socket at one end into which extends a projection 16 on a spring 17 for holding the pin in po- 5 sition. These two members 13 support the main bearing members of the trolley harp. It will be obvious that they can be dismount ed and taken out simply by bringing the projection 16 out of the socket and driving i the pin out inthe same direction, then they can bedrawn out longitudinally in an obvious manner and they can be replaced in an equally simple way. Integrally connected with the tops of these two members 13 i are the main casings 20 of the harp. Each of these is provided with a substantially cylindrical enlargement 21 at the top having a chamber therein for receiving the lubricant. The walls of this enlargement are integral so that the whole piece constitutes an integral casing. Each casing is provided with a cylindrical socket 23 surrounded near the inner end by a duct or channel 24. The

socket also is surrounded near the center by a channel 25 which extends from the chamber 26 in which the l1(]111(l lubricant located to the outer wall of the casing at the top. This channel 25 is covered by a spring plate 26 having a button 27 fitting in a depression cast inthe casing. The plate 26 is secured at the other end by a screw 28. By loosening this screw. and turning the spring plate to one side, a lubricating ring 2!) can be inserted. nected with the chamber 26 sage 30, as will be obvious.

Extending through a hub cast on the easing is a screw 31 on the end of a cylindrical bearing member 32. This screw extends through a hole bored in the hub and is held in position by a nut 33, or in any other desired way. The inside of the socket 23 and the hole or passage through which the screw 31 passes are formed concentric with each other so that the bearing member 32 is concentric with the socket 23.

The trolley wheel is provided with an extended shaft 11 preferably integral. with the wheel but not necessarily so. \Vhen not integral it may be brazed, welded, or soldered to the wheel so that it is securely fixed. The ends of this shaft are of a hollow cylindrical form so that they just fit in the socket 23 and they have their hearings on the bearing members 32 which fit the inner walls thereof. On account of this construction any wheel on the market can be used by making a shaft 41 to fit the hole of the wheel and driving it in. This is a very important feature for renewing the wheel, as the same is liable to wear out before the shaft, so that if a new wheel is desired all that is necessary is to drive the wheel off the shaft and put a new one on. On each side of the extended shaft is a projecting ring 42 and may be integral or secured in position which is located in the channel 24-. The outer wall of the passage 23 is enlarged to permit this to be inserted. It will be understood of course that the lubricating ring 29 by a drip pas- Patented A11 18, 1914."

The channel 24: is coni is inserted while the stud is being inserted so as to rest thereon and supply lubricant thereto. The bushing is provided with lubricating passages 43.

The way of assembling the device will be understood readily. The two casings are applied to the wheel simultaneously with the application of the lubricating rings and when they are in position the two members 13 are held together and inserted in the tubular member 12. i

In operation the shaft tl bears on the bearing members 32 and lubricant is applied in an obvious manner. The ring as throws surplus lubricant off by centrifugal force into the channel 2% and it drips back into the lubricant chamber. This prevents the lubricant from passing out of the casing and being dissipated.

The wear comes between the shaft and the bearing member 32 and in practice the shaft is formed of a harder metal than the bearing material 32. Preferably it is made of bronze but not necessarily so. When the parts are worn, the bearingmembers 82 are removed and replaced in an obvious and a simple manner and at extremely small cost. In this way the life of the wheel itself is very materially extended.

Although I have illustrated and described a preferred embodiment of the invention and shown the details thereof, I am aware that many modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claim. Therefore, I do not wish to be limited to all the details of construction herein shown and described, but

What I do claim is As an article of manufacture, a frame having opposite members, said members being provided with opposite inwardly opening cylindrical sockets and each of said sockets being provided'with a central inwardly projecting cylindrical bearing member extending from the base of each socket substantially to the mouth thereof and spaced from its inner walls, and having a chamber for lubricant under said bearing member and a channel extending upwardly therefrom around the bearing member to the top of the member for the admission of a lubricant, an oil-ring in said channel and chamher, and a shaft fitting said cylindrical sockets and having end sockets fitting said bearing members.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

EUGENE J .McCARTY.

Witnesses: y

W. H. DIETZMAN, A. E. FAY.

Copies of this patent may be obtained. for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

